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Open Source

'Open Documentation Academy' Offers On-Ramp To OSS 4

"Documentation authors at Canonical have launched the Open Documentation Academy to offer an easy way to get started contributing to open-source projects," writes longtime Slashdot reader tykev. From the blog post: Open and inclusive collaboration, and the sharing of ideas, remains the best way to develop software (and to do many other things!), but we also recognise that this "getting involved" step can be difficult. Where do you start? Who do you ask? What needs to be done? We all very much want to help people become open source contributors by building an on-ramp process. It may take some time, and we will need to adapt, but this is exactly why we've started our Open Documentation Academy.

To help you get involved, the Open Documentation Academy provides a curated list of documentation tasks. Choose one, let us know, and get started. Tasks include testing and fixing tutorials, updating the outdated, restructuring large documents, and anything else you may want to suggest. Our list is growing, and a big part of the Documentation Academy will be ensuring there's always a wide range of tasks available, across as many projects and technologies as possible. And of course, we're here to help. We'll guide you through your first contributions, provide advice on approaches, and help you build your confidence.
Microsoft

Microsoft Relents, Will Support VS Code On Ubuntu 18.04 For One More Year (omgubuntu.co.uk) 47

Last week Microsoft's Visual Studio Code editor suddenly stopped supporting Ubuntu 18.04 LTS.

But now Microsoft "has announced a temporary reprieve for developers who use VS Code to connect to servers, clouds, container, and other devices running on Ubuntu 18.04 LTS," according to the blog OMG Ubuntu: Microsoft [had] pushed out an update to VS Code that bumps its glibc requirement, dropping support for Ubuntu 18.04 LTS (which uses an older version of glibc) in the process. Innocuous though it sounds, that move had a huge impact, leaving thousands of developers who use VS Code unable to connect to/work with devices running Ubuntu 18.04 LTS or other Linux distros using glibc 2.27, including RHEL 7, CentOS 7, and Amazon Linux 2.

— "Screwed" was the term many of those affected used!

Well, good news: Microsoft says it plans to release a 'recovery' update for VS Code soon. This will restore the ability for developers to use the text editor's remote dev tools to connect to/work with machines running Ubuntu 18.04 LTS and other, older Linux distros.

But only for the next 12 months.

"We hope this will provide the needed time for you and your companies to migrate to newer Linux distributions," Microsoft's senior product manager for VS Code posted on GitHub. He added that the software will "show the appropriate dialog and banner that you are connecting to an OS that is not supported by VS Code." (The updated was released on Thursday.)

He also thanked developers for their feedback and "for sharing your passion for VS Code and sharing how it is being used to enable various scenarios."

Thanks to Slashdot reader motang for sharing the article.
Microsoft

How a Microsoft Update Broke VS Code Editor on Ubuntu (omgubuntu.co.uk) 149

Microsoft's Visual Studio Code editor now includes a voice command that launches GitHub Copilot Chat just by saying "Hey Code."

But one Linux blog notes that the editor has suddenly stopped supporting Ubuntu 18.04 LTS — "a move causing issues for scores of developers." VS Code 1.86 (aka the 'January 2024' update) saw Microsoft bump the minimum build requirements for the text editor's popular remote dev tools to â¥glibc 2.28 — but Ubuntu 18.04 LTS uses glibc 2.27, ergo they no longer work.

While Ubuntu 18.04 is supported by Canonical until 2028 (through ESM) a major glibc upgrade is unlikely. Thus, this "breaking change" is truly breaking workflows...

It seems affected developers were caught off-guard as this (rather impactful) change was not signposted before, during, or after the VS Code update (which is installed automatically for most, and the update was pushed out to Ubuntu 18.04 machines). Indeed, most only discovered this issue after update was installed, they tried to connect to a remote server, and discovered it failed. The resulting error message does mention deprecation and links to an FAQ on the VS Code website with workarounds (i.e. downgrade).

But as one developer politely put it.... "It could have checked the libc versions and refused the update. Now, many people are screwed in the middle of their work."

The article points out an upgrade to Ubuntu 20.04 LTS will address the problem. On GitHub a Microsoft engineer posted additional options from VS Code's documentation: If you are unable to upgrade your Linux distribution, the recommended alternative is to use our web client. If you would like to use the desktop version, then you can download the VS Code release 1.85. Depending on your platform, make sure to disable updates to stay on that version.
Microsoft then locked the thread on GitHub as "too heated" and limited conversation to just collaborators.

In a related thread someone suggested installing VS Code's Flatpak, which was still on version 1.85 — and then disabling updates. But soon Microsoft had locked that thread as well as "too heated," again limiting conversation to collaborators.
Networking

Ceph: a Journey To 1 TiB/s (ceph.io) 16

It's "a free and open-source, software-defined storage platform," according to Wikipedia, providing object storage, block storage, and file storage "built on a common distributed cluster foundation". The charter advisory board for Ceph included people from Canonical, CERN, Cisco, Fujitsu, Intel, Red Hat, SanDisk, and SUSE.

And Nite_Hawk (Slashdot reader #1,304) is one of its core engineers — a former Red Hat principal software engineer named Mark Nelson. (He's now leading R&D for a small cloud systems company called Clyso that provides Ceph consulting.) And he's returned to Slashdot to share a blog post describing "a journey to 1 TiB/s". This gnarly tale-from-Production starts while assisting Clyso with "a fairly hip and cutting edge company that wanted to transition their HDD-backed Ceph cluster to a 10 petabyte NVMe deployment" using object-based storage devices [or OSDs]...) I can't believe they figured it out first. That was the thought going through my head back in mid-December after several weeks of 12-hour days debugging why this cluster was slow... Half-forgotten superstitions from the 90s about appeasing SCSI gods flitted through my consciousness...

Ultimately they decided to go with a Dell architecture we designed, which quoted at roughly 13% cheaper than the original configuration despite having several key advantages. The new configuration has less memory per OSD (still comfortably 12GiB each), but faster memory throughput. It also provides more aggregate CPU resources, significantly more aggregate network throughput, a simpler single-socket configuration, and utilizes the newest generation of AMD processors and DDR5 RAM. By employing smaller nodes, we halved the impact of a node failure on cluster recovery....

The initial single-OSD test looked fantastic for large reads and writes and showed nearly the same throughput we saw when running FIO tests directly against the drives. As soon as we ran the 8-OSD test, however, we observed a performance drop. Subsequent single-OSD tests continued to perform poorly until several hours later when they recovered. So long as a multi-OSD test was not introduced, performance remained high. Confusingly, we were unable to invoke the same behavior when running FIO tests directly against the drives. Just as confusing, we saw that during the 8 OSD test, a single OSD would use significantly more CPU than the others. A wallclock profile of the OSD under load showed significant time spent in io_submit, which is what we typically see when the kernel starts blocking because a drive's queue becomes full...

For over a week, we looked at everything from bios settings, NVMe multipath, low-level NVMe debugging, changing kernel/Ubuntu versions, and checking every single kernel, OS, and Ceph setting we could think of. None these things fully resolved the issue. We even performed blktrace and iowatcher analysis during "good" and "bad" single OSD tests, and could directly observe the slow IO completion behavior. At this point, we started getting the hardware vendors involved. Ultimately it turned out to be unnecessary. There was one minor, and two major fixes that got things back on track.

It's a long blog post, but here's where it ends up:
  • Fix One: "Ceph is incredibly sensitive to latency introduced by CPU c-state transitions. A quick check of the bios on these nodes showed that they weren't running in maximum performance mode which disables c-states."
  • Fix Two: [A very clever engineer working for the customer] "ran a perf profile during a bad run and made a very astute discovery: A huge amount of time is spent in the kernel contending on a spin lock while updating the IOMMU mappings. He disabled IOMMU in the kernel and immediately saw a huge increase in performance during the 8-node tests." In a comment below, Nelson adds that "We've never seen the IOMMU issue before with Ceph... I'm hoping we can work with the vendors to understand better what's going on and get it fixed without having to completely disable IOMMU."
  • Fix Three: "We were not, in fact, building RocksDB with the correct compile flags... It turns out that Canonical fixed this for their own builds as did Gentoo after seeing the note I wrote in do_cmake.sh over 6 years ago... With the issue understood, we built custom 17.2.7 packages with a fix in place. Compaction time dropped by around 3X and 4K random write performance doubled."

The story has a happy ending, with performance testing eventually showing data being read at 635 GiB/s — and a colleague daring them to attempt 1 TiB/s. They built a new testing configuration targeting 63 nodes — achieving 950GiB/s — then tried some more performance optimizations...


GUI

Linux Mint 21.3: Its First Official Release with Wayland Support (omgubuntu.co.uk) 71

Linux Mint 21.3 is now available to download, reports the blog OMG Obuntu.

It's the first version to offer Wayland support in its Cinnamon desktop: Following a successful bout of bug-busting in last month's beta release, Mint devs have gone ahead and rubber-stamped a stable release. Thus, you can reasonably expect to not encounter any major issues when installing or using it... [I]t's based on Ubuntu 22.04 LTS and continues to use the Linux 5.15 kernel by default, but newer kernels are available to install within the OS...

In my own testing I find Cinnamon's Wayland support to be well-rounded. It's not perfect but I didn't hit any major snafus that prevented me from working (though admittedly I did only attempt 'basic' tasks like web browsing, playing music, and adding applets). However, Cinnamon's Wayland support is in an early state, is not enabled by default, and Linux Mint devs expect it won't be good enough for everyone until the 23.x series (due 2026) at the earliest. Still, try it out yourself and see if it works for you. Select the 'Cinnamon on Wayland (Experimental)' session from the login screen session selector, and then login as normal...

Additionally, the latest version of Mozilla Firefox is pre-installed (as a deb, not a Snap)

Among the new features are a whole new category of desktop add-ons — "Actions" — which upgrade the right-clicking context menu. (So for .iso files there's two new choices: "Verify" or "Make bootable USB stick".)

The article says there's also "a raft of smaller refinements," plus "a bevvy of buffs and embellishments" for Linux Mint's homegrown apps.

Any Linux Mint users reading Slashdot? Share your thoughts or experiences in the comments...
Operating Systems

Biggest Linux Kernel Release Ever Welcomes bcachefs File System, Jettisons Itanium (theregister.com) 52

Linux kernel 6.7 has been released, including support for the new next-gen copy-on-write (COW) bcachefs file system. The Register reports: Linus Torvalds announced the release on Sunday, noting that it is "one of the largest kernel releases we've ever had." Among the bigger and more visible changes are a whole new file system, along with fresh functionality for several existing ones; improved graphics support for several vendors' hardware; and the removal of an entire CPU architecture. [...] The single biggest feature of 6.7 is the new bcachefs file system, which we examined in March 2022. As this is the first release of Linux to include the new file system, it definitely would be premature to trust any important data to it yet, but this is a welcome change. The executive summary is that bcachefs is a next-generation file system that, like Btrfs and ZFS, provides COW functionality. COW enables the almost instant creation of "snapshots" of all or part of a drive or volume, which enables the OS to make disk operations transactional: In other words, to provide an "undo" function for complex sets of disk write operations.

Having a COW file system on Linux isn't new. The existing next-gen file system in the kernel, Btrfs, also supports COW snapshots. The version in 6.7 sees several refinements. It inherits a feature implemented for Steam OS: Two Btrfs file systems with the same ID can be mounted simultaneously, for failover scenarios. It also has improved quota support and a new raid_stripe_tree that improves handling of arrays of dissimilar drives. Btrfs remains somewhat controversial. Red Hat banished it from RHEL years ago (although Oracle Linux still offers it) but SUSE's distros depend heavily upon it. It will be interesting to see how quickly SUSE's Snapper tool gains support for bcachefs: This new COW contender may reveal unquestioned assumptions built into the code. Since Snapper is also used in several non-SUSE distros, including Spiral Linux, Garuda, and siduction, they're tied to Btrfs as well.

The other widely used FOSS next-gen file system, OpenZFS, also supports COW, but licensing conflicts prevent ZFS being fully integrated into the Linux kernel. So although multiple distros (such as NixOS, Proxmox, TrueNAS Scale, Ubuntu, and Void Linux) support ZFS, it must remain separate and distinct. This results in limitations, such as the ZFS Advanced Read Cache being separate from Linux's page cache. Bcachefs is all-GPL and doesn't suffer from such limitations. It aims to supply the important features of ZFS, such as integrated volume management, while being as fast as ext4 or XFS, and also surpass Btrfs in both performance and, crucially, reliability.
A full list of changes in this release can be viewed via KernelNewbies.
Ubuntu

ZDNet Calls Rhino Linux 'New Coolest Linux Distro' (zdnet.com) 52

If you're starting the new year with a new Linux distro, ZDNet just ran an enthusiastic profile of Rhino Linux, calling it "beautiful" with "one of the more useful command-line package managers on the market." Rhino uses a modern take on the highly efficient and customizable Xfce desktop (dubbed "Unicorn") to help make the interface immediately familiar to anyone who logs in. You'll find a dock on the left edge of the screen that contains launchers for common applications, access to the Application Grid (where you can find all of your installed software), and a handy Search Bar (Ulauncher) that allows you to quickly search for and launch any installed app (or even the app settings) you need...

Thanks to myriad configuration options, Xfce can be a bit daunting. At the same time, the array of settings makes Xfce highly customizable, which is exactly what the Rhino developers did when they designed this desktop. For those who want a desktop that makes short work of accessing files, the Rhino developers have added a really nifty tool to the top bar. You'll find a listing of some folders you have in your Home directory (Files, Documents, Music, Pictures, Video). If you click on one of those entries, you'll see a list of the most recently accessed files within the directory. Click on the file you want to open with the default, associated application...

Rhino opts for the Pacstall package manager over the traditional apt-get. That's not to say apt-get isn't on the system — it is. But with Rhino Linux, there's a much easier path to getting the software you want installed... [W]hen you first run the installed OS, you are greeted with a window that allows you to select what package managers you want to use. You can select from Snap, Flatpak, and AppImages (or all three). Next, the developers added a handy tool (rhino-pkg) that makes installing from the command line very simple.

When the distro launched in August, 9to5Linux described it as "a unique distribution for Ubuntu fans who wanted a rolling-release system where they install once and receive updates forever." The theming looks gorgeous and it's provided by the Elementary Xfce Darker icon theme, Xubuntu's Greybird GTK theme, and Ubuntu's Yaru Dark WM theme. It also comes with some cool features, such as a dedicated and full-screen desktop switcher provided by Xfdashboard...
Open Source

NotePad++ 20th Anniversary Edition Includes New 'Multi-Edit' Feature (notepad-plus-plus.org) 56

The free open-source text editor Notepad++ is celebrating its 20th anniversary, the blog OMG! Ubuntu reported this week, "with a new release filled with some neat new features." In Notepad++ 8.6 (the 238th release since 2003, for those keeping count) the Windows-based code tool [which can also be used on Linux] adds to its extensive feature set with an improved multi-edit feature.

A few 3rd-party Notepad++ plugins have offered similar functionality for a while, including BetterMultiSelection. And a bug report requesting to ability to "transform the column mode to multi-caret on HOME/END/Arrow keys" led to this native addition.

Their blog post includes an animated GIF of Notepad++ multi-edit in action.

"You can install Notepad++ on Ubuntu straight from the Ubuntu Software/App Center app (it's a Snap Store). Alternatively, install the Windows build via WINE/CrossOver or, if you got the l33t skillz, build it by hand, from source."
GUI

Ubuntu Budgie Switches to an Xfce Approach to Wayland (theregister.com) 71

Last January the Register reported that the Budgie desktop environment was planning to switch from using GNOME to Enlightenment. But this week Budgie's project lead David Mohammed and packaging guru Sam Lane "passed on news of a rift — and indeed possible divorce — between Budgie and Enlightenment," the Register reported. "And it's caused by Wayland." The development team of the Budgie desktop is changing course and will work with the Xfce developers toward Budgie's Wayland future...

While Enlightenment does have some Wayland support, in the project's own words this is "still considered experimental and not for regular end users." Mohammed told us... "Progress though towards a full implementation currently doesn't fit into the deemed urgent nature to move to Wayland (Red Hat dropping further X11 development, and questions as to any organisation stepping up, etc.)"

So, instead, Budgie is exploring different ways to build a Wayland-only environment. For now, as we mentioned when looking at Ubuntu's 23.10 release, there's a new windowing library, Magpie. Magpie 0.9 is what the project describes as "a soft-fork of GNOME's mutter at version 43" — the term soft fork meaning it's a temporary means to an end, rather than intended to form an on-going independent continuation.

For the future, though, Mohammed told us... "[T]he Budgie team has been evaluating options to move forward. XFCE are doing some really great work in this area with libxfce4windowing — a compatibility layer bridging Wayland and X11, allowing the move in a logical direction without needing a big-bang approach. To date, most of the current codebase has already been reworked and is ready for a Wayland-only approach without impacting further development and enhancements."

Mohammed later told the Register, "It makes sense for the more dynamic smaller projects to work together where there are shared aims."
Firefox

Firefox 120 Ready With Global Privacy Control, WebAssembly GC On By Default (phoronix.com) 32

Firefox 120 will be available tomorrow, bringing support for the Global Privacy Control "Sec-GPC" request header to indicate whether a user consents to a website or service selling or sharing their personal information with third parties. It's also enabling the WebAssembly GC extension by default, opening up new languages like Dart and Kotlin to run in the browser. Phoronix's Michael Larabel highlights some of the other features included in this release: - Ubuntu Linux users now have the ability to import data from Chromium when both are installed as Snap packages. - Picture-in-Picture mode now supports corner snapping on Windows and Linux.
- Support for the light-dark() CSS color function that allows setting of colors for both light and dark without needing to use the prefers-color-scheme media feature. This allows conveniently specifying the preferred light color theme value followed by the dark color theme value.
- CSS support for the lh and rlh line height units.

GUI

Raspberry Pi OS, elementary OS Will Default to Wayland (elementary.io) 75

Recently the Register pointed out that the new (Debian-based) Raspberry Pi OS 5.0 has "a completely new Wayland desktop environment replacing PIXEL, the older desktop based on LXDE and X.org, augmented with Mutter in its previous release."

And when elementary OS 8 finally arrives, "the development team plans to finally shift to the Wayland display server by default," reports Linux magazine (adding "If you'd like to get early access to daily builds, you can do so by becoming an elementary OS sponsor on GitHub.")

"This is a transition that we have been planning and working towards for several years," writes CEO/co-founder Danielle Foré, "and we're finally in the home stretch... Wayland will bring us improved performance, better app security, and opens the doors to support more complex display setups like mixed DPI multi-monitor setups." There are other things that we're experimenting with, like the possibility of an immutable OS, and there are more mundane things that will certainly happen like shipping Pipewire. You'll also see on the project board that we're looking to replace the onscreen keyboard and it's time to re-evaluate some things like SystemD Boot. You can expect lots more little features to be detailed over the coming months.
Meanwhile, Linux Mint is getting "experimental" Wayland support next month. And also in December, Firefox will let Wayland support be enabled by default.

And last month the Register noted a merge request for GNOME to remove the gnome-xorg.desktop file. "To put this in context, the Fedora project is considering a comparable change: removing or hiding the GNOME on X.org session from the login menu, which is already the plan for the Fedora KDE spin when it moves to KDE version 6, which is still in development."
Linux

Canonical Intros Microcloud: Simple, Free, On-prem Linux Clustering (theregister.com) 16

Canonical hosted an amusingly failure-filled demo of its new easy-to-install, Ubuntu-powered tool for building small-to-medium scale, on-premises high-availability clusters, Microcloud, at an event in London yesterday. From a report: The intro to the talk leaned heavily on Canonical's looming 20th anniversary, and with good reason. Ubuntu has carved out a substantial slice of the Linux market for itself on the basis of being easier to use than most of its rivals, at no cost -- something that many Linux players still seem not to fully comprehend. The presentation was as buzzword-heavy as one might expect, and it's also extensively based on Canonical's in-house tech, such as the LXD containervisor, Snap packaging, and, optionally, the Ubuntu Core snap-based immutable distro. (The only missing buzzword didn't crop up until the Q&A session, and we were pleased by its absence: it's not built on and doesn't use Kubernetes, but you can run Kubernetes on it if you wish.)

We're certain this is going to turn off or alienate a lot of the more fundamentalist Penguinistas, but we are equally sure that Canonical won't care. In the immortal words of Kevin Smith, it's not for critics. Microcloud combines several existing bits of off-the-shelf FOSS tech in order to make it easy to link from three to 50 Ubuntu machines into an in-house, private high-availability cluster, with live migration and automatic failover. It uses its own LXD containervisor to manage nodes and workloads, Ceph for distributed storage, OpenZFS for local storage, and OVN to virtualize the cluster interconnect. All the tools are packaged as snaps. It supports both x86-64 and Arm64 nodes, including Raspberry Pi kit, and clusters can mix both architectures. The event included several demonstrations using an on-stage cluster of three ODROID machines with "Intel N6005" processors, so we reckon they were ODROID H3+ units -- which we suspect the company chose because of their dual Ethernet connections.

Ubuntu

Canonical Reveals More Details About Ubuntu Core Desktop 22

Next April a new LTS Ubuntu arrives, and alongside it will be a whole new immutable desktop edition. At this year's Ubuntu conference in Riga, Latvia, Canonical revealed more details about its forthcoming immutable desktop distro. From a report: Core Desktop is not the next version of Ubuntu itself. Ordinary desktop and server Ubuntu aren't going anywhere, and the next release, numbered 24.04 and codenamed Noble Numbat as we mentioned last month, will be the default and come with all the usual editions and flavors. Nor is this a whole new product: it is a graphical desktop edition of the existing Ubuntu Core distro, as we examined on its release in June last year, a couple of months after 22.04. Ubuntu Core is Canonical's Internet of Things (IoT) distro, intended to be embedded on edge devices, such as digital signs and smart displays. It is an immutable distro, meaning that the root filesystem is read-only and there's no conventional package manager.

Rather than being a basis for customization, like a conventional Linux, the idea is that immutable distros are rolled out and updated more like a phone or tablet OS: there's a single fixed and heavily tested OS image, and it's deployed onto the devices out in the field without modification. Updates are monolithic: a whole fresh image is pushed out, and all the OS components are upgraded in a single operation to the same combination. That isn't unique. Most of the major Linux vendors have immutable offerings, and The Reg has looked at several over the years, including MicroOS, the basis of SUSE's next-gen enterprise OS ALP. As well as the well-known ChromeOS, another immutable desktop is the educational distro Endless OS.

[...] Canonical believes it has some unique new angles. Core Desktop is constructed as additional layers on top of the existing Ubuntu Core distro, and like Core, it's entirely built with a single packaging system: Ubuntu's Snap. While Snap remains controversial, it does have some compelling advantages over both SUSE and Red Hat's tooling. SUSE's transactional_update tool, while simpler than its rivals in implementation, requires a snapshot-capable filesystem, meaning that its immutable distros must use Btrfs. While it has many admirers, the number and the contents of the orange and red cells in the feature tables here in its own documentation reflect the FOSS desk's serious reservations about Btrfs.
Firefox

Mozilla Introduces Firefox Nightly .deb Packages for Debian-based Linux Distros (9to5linux.com) 23

Mozilla has some news for users of Debian-based Linux distributions (such as Debian, Ubuntu, Linux Mint, and others): installing, updating, and testing the latest Firefox Nightly builds just got a lot easier. We've set up a new APT repository for you to install Firefox Nightly as a .deb package... These packages are compatible with the same Debian and Ubuntu versions as our traditional binaries. If you've previously used our traditional binaries (distributed as .tar.bz2 archives), switching to Mozilla's APT repository allows Firefox to be installed and updated like any other application... You will not have to restart Firefox after updating the package with APT...

For those of you who would like to use Firefox Nightly in a different language than American English, we have also created .deb packages containing the Firefox language packs.

Some context from 9to5Linux: Back in April, I reported that Mozilla was offering a DEB package of the Firefox 113 release during the beta testing phase. Unfortunately, that was the only time a DEB package was available for download and, of course, it didn't make it into the final release of Firefox 113, nor future releases. It would appear that Mozilla needed more time to work on the DEB package for Debian and Ubuntu-based distributions, and it looks like it will finally become a thing starting with an upcoming Firefox release, like Firefox 121 or later...

Using the DEB package over Snap or the official binary package offers some benefits like better performance due to advanced compiler-based optimizations, hardened binaries with all security flags enabled, access to the latest Firefox releases as fast as possible [because the .deb is integrated into Firefox's release process], and you won't have to create your own .desktop file anymore.

GUI

Linux Mint Gets 'Experimental' Wayland Support in December (9to5linux.com) 57

"The work started on Wayland," the Linux Mint project announced in their monthly newsletter.

An anonymous reader shared this report from 9to5Linux about an upcoming new option in the Ubuntu-based distro: Linux Mint 21.3 [planned for Christmas of 2023] will be the first Linux Mint release to offer a Wayland session, but in an experimental state. The default session will still be the X11 one, but users who want to try Wayland can do so by selecting the "Cinnamon on Wayland" session from the login screen.

"The Wayland session won't be as stable as the default one. It will lack features and it will come with its own limitations. We won't recommend it but you'll be able to give it a shot if you want to and it'll be there for interested people if they want to give us feedback," said Linux Mint project leader Clement Lefebvre.

I said that "2024 is the year of the Wayland desktop", but Clement Lefebvre doesn't think Linux Mint needs Wayland support before 2026... By that time, I believe Xfce will also be fully Wayland compatible so that Linux Mint can fully switch to Wayland by default.

The newsletter says the 2026 target "leaves us two years to identify and to fix all the issues. It's something we'll continue to work on.

"Whenever it happens, assuming it does, we'll consider switching defaults. We'll use the best tools to do the job and provide the best experience. Today that means Xorg. Tomorrow it might mean Wayland. We'll be ready and compatible with both."
Ubuntu

How Ubuntu Linux Snuck Into High-End Dell Laptops (zdnet.com) 48

Linus Torvalds has said he bought a Dell XPS-13 with Ubuntu Linux for his daughter. Now ZDNet shares some trivia from the history of "the most well-known Linux laptop," citing a presentation by Barton George, Dell Technologies' Developer Community manager, at the Linux/open-source conference All Things Open: First, however, you should know that Dell has supported Linux desktops and laptops since the middle 2000s. In 2006, Michael Dell told me that Dell would be the first major PC vendor to release and support desktop Linux — and this proved to be a success. Barton George explained that Dell had always done great volume with these computers. Not volume, like the Windows machines, of course, but enough that Dell has always offered Linux-based — primarily Red Hat Enterprise Linux (RHEL) powered — workstations.

Still, none of these machines really appealed to developers... George announced on his personal blog what Dell was planning, and his traffic went from 60 views a day to 15,000. Then, as now, there's a lot of interest in laptops that come with Linux ready to go... Dell got together with Canonical, Ubuntu Linux's parent company, to make sure all the drivers were in place for a top-notch Ubuntu Linux developer desktop experience. Indeed, the name 'Project Sputnik' is a nod to Mark Shuttleworth, Ubuntu founder and Canonical CEO. A decade before the project itself, Shuttleworth had spent eight days orbiting the Earth in a Soviet Soyuz spacecraft. George and the crew decided "Soyuz" didn't have an inspiring ring to it, so the company went with "Sputnik" instead.

George continued: "We announced a beta program for the machine with a 10% off offer. We thought, well, we'll probably get 300 people. Instead, we got 6,000. This is where senior management said OK, you've got something real."

Linux

Rust-Based 'Resources' is a New, Modern System Monitor for Linux (omgubuntu.co.uk) 57

An anonymous reader shared this article from the Linux blog OMG! Ubuntu: The System Monitor app Ubuntu comes with does an okay job of letting you monitor system resources and oversee running processes — but it does look dated... [T]he app's graphs and charts are tiny, compact, and lack the glanceability and granular-detail that similar tools on other systems offer.

Thankfully, there are plenty of ace System Monitor alternatives available on Linux, with the Rust-based Resources being the latest tool to the join the club. And it's a real looker... Resources shows real-time graphs showing the utilisation of core system components... You can also see a [sortable and searchable] list of running apps and processes, which are separated in this app.

It's also possible to select a refresh interval "from very slow/slow/normal/fast/very fast (though tempting to select, 'very fast' can increase CPU usage)." And selecting an app or process "activates a big red button you can click to 'end' the app/process (a submenu has options to kill, halt, or continue the app/process instead)..."

"If you don't like the 'Windows-iness' of Mission Center — which you may have briefly spotted it in my Ubuntu 23.10 release video — then Resources is a solid alternative."
Ubuntu

Ubuntu 23.10 Is a Minotaur That Moves Faster and Takes Up Less Space (arstechnica.com) 26

SpzToid writes: Ubuntu 23.10, codenamed Mantic Minotaur, is the 39th Ubuntu release, and it's one of the three smaller interim releases Canonical puts out between long-term support (LTS) versions. This last interim before the next LTS doesn't stand out with bold features you can identify at a glance. But it does set up some useful options and upgrades that should persist in Ubuntu for some time.

Two of the biggest changes in Ubuntu 23.10 are in the installer. Ubuntu now defaults to a "Default installation," which is quite different from what the "default" was even just one release prior. "Default" is described as "Just the essentials, web browser, and basic utilities," while "Full" is "An offline-friendly selection of office tools, utilities, web browser, and games." "Default" is somewhat similar to what "Minimal" used to be in prior versions, while "Full" is intended for those who are offline or have slow connections or just want as many options as possible right away.

Elsewhere in the installer, you can now choose ZFS as your primary file system. There's also an experimental option to set up Trusted Platform Module (TPM) full-disk encryption rather than rely entirely on passphrases to encrypt your disk. This brings Ubuntu up to speed with Windows in offering a way to both secure your system and find out the hard way that you lack a backup key to get in after messing with your boot options. (Kidding! Somewhat.)

Debian

Red Hat, Ubuntu, Debian, and Gentoo Release Patches for 'Looney Tunables' Linux Vulnerability (zdnet.com) 22

Thursday ZDNet reported... As security holes go, CVE-2023-4911, aka "Looney Tunables," isn't horrid. It has a Common Vulnerability Scoring System score of 7.8, which is ranked as important, not critical.

On the other hand, this GNU C Library's (glibc) dynamic loader vulnerability is a buffer overflow, which is always big trouble, and it's in pretty much all Linux distributions, so it's more than bad enough. After all, its discoverers, the Qualys Threat Research Unit, were able to exploit "this vulnerability (a local privilege escalation that grants full root privileges) on the default installations of Fedora 37 and 38, Ubuntu 22.04 and 23.04, and Debian 12 and 13." Other distributions are almost certainly vulnerable to attack. The one major exception is the highly secure Alpine Linux. Thanks to this vulnerability, it's trivial to take over most Linux systems as a root user. As the researchers noted, this exploitation method "works against almost all of the SUID-root programs that are installed by default on Linux...."

The good news is that Red Hat, Ubuntu, Debian, and Gentoo have all released their own updates. In addition, the upstream glibc code has been patched with the fix. If you can't patch it, Red Hat has a script that should work on most Linux systems to mitigate the problem by setting your system to terminate any setuid program invoked with GLIBC_TUNABLES in the environment.

The Almighty Buck

Canonical's Snap Store Restricts Uploads Following Possible Security Issue (snapcraft.io) 29

Yesterday the "temporary suspension" of automatic Snap registrations was announced on Canonical's Snapcraft forum by developer advocate Igor Ljubuncic, after what was described as a "security incident". On September 28, 2023, the Snap Store team was notified of a potential security incident. A number of snap users reported several recently published and potentially malicious snaps. As a consequence of these reports, the Snap Store team has immediately taken down these snaps, and they can no longer be searched or installed. Furthermore, the Snap Store team has placed a temporary manual review requirement on all new snap registrations, effectively immediately...

We apologize for any inconvenience this may cause our snap publishers and developers. However, we believe it is the most prudent action at this moment. We want to thoroughly investigate this incident without introducing any noise into the system, and more importantly, we want to make sure our users have a safe and trusted experience with the Snap Store. Please bear with us while we conduct our investigation. We will provide a more detailed update in the coming days.

Some background from the Linux blog OMG Ubuntu: This isn't the first time the Snap Store has had issues with icky uploads. In 2018 an innocuous-sounding app hid crypto-mining capabilities unbeknownst to users. Not disclosing this in its description rendered it malware (Canonical later clarified to say crypto-miners are allowed so long as they're disclosed).

In this instance it appears that folks have uploaded apps purporting to be official apps/tools for crypto ledger tool Ledger and these apps were able to get folks backups codes (which people enter thinking it's legit) and ...the bad actors can use that to extract funds.

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